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Finding the Fourth Proportional to 2,808.94, 3,876.38 and 1,550.05

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Solution

The fourth proportional to 2,808.94, 3,876.38 and 1,550.05 is: 2,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.94 : 3,876.38 = 1,550.05 : x
  2. Step 2: Convert to fraction form
    2,808.94/3,876.38 = 1,550.05/x
  3. Step 3: Cross multiply
    2,808.94x = 3,876.38 × 1,550.05
  4. Step 4: Simplify right side
    2,808.94x = 6,008,582.82
  5. Step 5: Solve for x
    x = 6,008,582.82/2,808.94
  6. Step 6: Final answer
    x = 2,139.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.